Negative Viscosity Anomaly of Liquid Petroleum Products after Heat Treatment |
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Authors: | I N Evdokimov D Yu Eliseev N Yu Eliseev |
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Affiliation: | (1) I. M. Gubkin Russian State University of Oil and Gas, Russia |
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Abstract: | Heat treatment is a common method of improving the properties of heavy crude oils and petroleum products. Measurements showed for the first time that after heat treatment at 28—40°C, the rheological parameters of petroleum systems become much worse. The results obtained are important for improving shipping and storage technologies in conditions of periodic temperature drops. A theoretical explanation of these effects is given with consideration of the phase diagrams of petroleum systems and thermally induced changes in their colloidal structure. |
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